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  1. #1

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    Difference between RIva Impeller and housing vs RR inpeller

    What is the difference bettween Riva SC inpeller, riva ecu, and housing vs RR High boost impeller, stock ecu, and 42# injectors

    Is it worth it buying the Riva impeller, riva ecu, and injectors or the RR High boost impeller with the 42# injectors.

    I have some money and want to do the wise thing...
    Thanks
    Hect


  2. #2
    shhr's Avatar
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    I am getting the RR impellar. I think you will have to wait most of the summer for the Riva one they say July but who knows if you preorder the RR one you may get it in the next batch which should be soon

    I do like the Riva impellar as I have one on my 03 SC and I like the idea of a complete SC for 799 that is a good deal but I dont wont to wait all summer and i dont think there will be any performance difference between the 2

  3. #3

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    50 lb injectors are required for 13 lb supercharger. My guess they copied Les.

  4. #4
    Good thing there was competition or Riva would have been selling it for 1000+ like Les.

  5. #5
    shhr's Avatar
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    I just wish the RR impeller would hurry up and get here as my ski is down now having the bung welded it would be nice to limit the down time

    Hey Jerry any word on the impellers

    and just for information I plan on getting air/fuel readings with just the impeller only everything else stock. I am curious to see the numbers with stock air intake and injectors. I will have the injectors ready if it is lean

  6. #6
    Quote Originally Posted by shhr
    and just for information I plan on getting air/fuel readings with just the impeller only everything else stock.
    can't wait for those results. I know good chance it will be lean but it would be interesting to know the numbers.

  7. #7

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    Quote Originally Posted by Kinchyle
    Quote Originally Posted by shhr
    and just for information I plan on getting air/fuel readings with just the impeller only everything else stock.
    can't wait for those results. I know good chance it will be lean but it would be interesting to know the numbers.
    Don't be so sure about that i know about 3 skis (one local and two from the states) runing the new RR high boost SC impeller with the RR ECU'S in their stage II skis with the stock (38lbs/hrs injectors) without a single issue, but all of them are running in very hot mid 80 to low 90 deg weather.

    P.S. one of this skis is gonna be @ mudbug.

  8. #8
    I'm always in 85-90+ degree weather thats why I don't think I would need injectors. Next season I'll have the A/F to try...

  9. #9
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by rxpstan
    50 lb injectors are required for 13 lb supercharger. My guess they copied Les.
    Actually the Riva modded SC is nothing like Les Cooke's B kit.

  10. #10
    Riva said 10.5 boost

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